CN115704125A - Flexible heating fabric and preparation method thereof - Google Patents
Flexible heating fabric and preparation method thereof Download PDFInfo
- Publication number
- CN115704125A CN115704125A CN202110888829.XA CN202110888829A CN115704125A CN 115704125 A CN115704125 A CN 115704125A CN 202110888829 A CN202110888829 A CN 202110888829A CN 115704125 A CN115704125 A CN 115704125A
- Authority
- CN
- China
- Prior art keywords
- fabric
- temperature
- flexible heating
- heating
- fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 139
- 239000004744 fabric Substances 0.000 title claims abstract description 119
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 title description 2
- 238000003763 carbonization Methods 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 20
- 229920005594 polymer fiber Polymers 0.000 claims abstract description 18
- 230000008569 process Effects 0.000 claims abstract description 15
- 239000002657 fibrous material Substances 0.000 claims abstract description 11
- 239000004642 Polyimide Substances 0.000 claims description 32
- 229920001721 polyimide Polymers 0.000 claims description 32
- 239000000835 fiber Substances 0.000 claims description 23
- 238000001816 cooling Methods 0.000 claims description 16
- 229920006231 aramid fiber Polymers 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 9
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 8
- 239000005011 phenolic resin Substances 0.000 claims description 8
- 229920001568 phenolic resin Polymers 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 6
- 239000004917 carbon fiber Substances 0.000 claims description 6
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 238000005979 thermal decomposition reaction Methods 0.000 claims description 6
- 229920003043 Cellulose fiber Polymers 0.000 claims description 5
- 239000013081 microcrystal Substances 0.000 claims description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- 125000004432 carbon atom Chemical group C* 0.000 claims description 4
- 238000010000 carbonizing Methods 0.000 claims description 4
- 229920006277 melamine fiber Polymers 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 239000012298 atmosphere Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229910052786 argon Inorganic materials 0.000 claims description 2
- 125000004429 atom Chemical group 0.000 claims description 2
- 238000009396 hybridization Methods 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- 239000004745 nonwoven fabric Substances 0.000 claims description 2
- 239000002759 woven fabric Substances 0.000 claims description 2
- 239000004753 textile Substances 0.000 abstract description 4
- 230000017525 heat dissipation Effects 0.000 abstract description 2
- 238000010792 warming Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 16
- 239000002861 polymer material Substances 0.000 description 8
- 239000000523 sample Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000005485 electric heating Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 229920000877 Melamine resin Polymers 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 4
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 4
- 238000010998 test method Methods 0.000 description 4
- 238000012795 verification Methods 0.000 description 4
- 229920002678 cellulose Polymers 0.000 description 3
- 239000001913 cellulose Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000012300 argon atmosphere Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005087 graphitization Methods 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000006664 bond formation reaction Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000003331 infrared imaging Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Landscapes
- Professional, Industrial, Or Sporting Protective Garments (AREA)
Abstract
The invention provides a novel flexible heating fabric for conductive heating and a preparation method thereof. Obtaining a conductive fabric with specific conductivity by controlling the carbonization treatment process of the high polymer fiber material; by loading voltage, the flexible fabric with the conductive heating function can be obtained. The invention has simple process, and the obtained conductive heating fabric has the characteristics of light weight, uniform heat dissipation, safety, high thermal efficiency, wide applicability and the like, can be widely used for clothes, household textiles, industrial textiles and the like, and achieves the purposes of heating and warming.
Description
Technical Field
The invention relates to a flexible heating fabric and a preparation method thereof, in particular to a flexible heating fabric which is subjected to carbonization treatment and has adjustable and controllable conductivity and a preparation method thereof.
Background
At present, the conductive heating materials applied to various fields of industrial production and residential life mainly comprise infrared lamp tubes, electric heating radiators, metal resistance wires, electric heating films and the like. These conductive heating materials have various disadvantages in terms of heating uniformity, safety in use, flexibility, and thermal efficiency, and are particularly prominent as heating materials for clothing. At present, the electric heating film widely used on the clothes adopts a sandwich process that conductive glue is adhered between two plastic films, although the electric heating film has the conductive heating effect, the used plastic films have no air permeability; meanwhile, the heating area is concentrated near the conductive adhesive, the heating area cannot be uniformly distributed, the local temperature difference is large, and the comfort and the application range of the heating area are limited.
Disclosure of Invention
The invention provides a flexible heating fabric and a preparation method thereof, which are used for solving the problems of nonuniform heating, poor safety, low thermal efficiency, incapability of bearing folding and bending and the like in the conventional conductive heating material. The invention adopts specific organic polymer fiber fabric as raw material, and prepares the heating fabric by carbonization process. The most important performance of the conductive heating material is conductivity, and the conductivity of the conductive heating material is controllable, so that ideal resistivity and heating power can be obtained under any fabric weight and area conditions according to the specific application scene of the fabric. The heating fabric prepared by the invention has the characteristics of good flexibility, light weight, uniform heat dissipation, safety, high heat efficiency and wide applicability, can be widely applied to the fields of clothes, household textiles, industrial textiles and the like, and achieves the purposes of heating and warming.
The technical principle of the invention is as follows: among the polymer materials, some polymer materials have a characteristic that a melting temperature is higher than a thermal decomposition temperature thereof, so that they are thermally decomposed to become a carbon material before the melting reaction occurs in a carbonization process. Thus, the carbonized polymer material can maintain the flexibility of the polymer material before carbonization. If the molecular structure of the high polymer material has a hexagonal ring-shaped microstructure consisting of carbon atoms on the same layer, the original position of the carbon atoms is not changed in the carbonization process, and a graphite microcrystal structure can be directly formed, so that the electric conduction of the material is realized. Meanwhile, the resistance of the carbonized high polymer material is regulated and controlled by controlling the number of graphite microcrystal structures formed in the high polymer material carbonization process.
The invention is realized by the following technical scheme: a kind of high molecular fibre material with specific performance, such as polyimide fibre, cellulose fibre, phenolic resin fibre, melamine fibre and aramid fibre, is chosen to make fabrics. The polymer fiber material has the characteristic that the melting temperature is higher than the thermal decomposition temperature, and a large number of ring structures are arranged in the molecular structure; by controlling parameters such as heating temperature, heating speed, heating time and the like of the polymer fiber material in the carbonization process, the carbonized polymer fiber material still keeps partial flexibility on the premise of realizing carbonization conduction; in addition, the polymer fiber material does not need graphitization treatment, and the resistance of the material can be regulated and controlled only by controlling the carbonization process and the carbonization degree, so that the flexible conductive fabric with controllable conductivity is finally obtained. The experimental results show that: the higher the constant temperature in the carbonization treatment process is, the longer the duration is, and the lower the sheet resistance of the obtained flexible heating fabric is.
The invention provides a flexible heating fabric, which is a carbon fiber fabric obtained by carbonizing a high polymer fiber fabric.
Further, in the present invention, it is preferable that,the carbon fibers in the carbon fiber fabric have a part or all of flaky graphite microcrystal structures in the axial direction of the fibers; the graphite microcrystal structure is a hexagonal sheet laminated structure which is formed by sp atoms of carbon atoms on the same layer 2 Formed by covalent bond formation in a hybridization mode.
Further, the polymer fiber material is one or more of polyimide fiber, cellulose fiber, phenolic resin fiber, melamine fiber and aramid fiber.
Further, the flexible heating fabric is one of woven fabric, knitted fabric, three-dimensional fabric or non-woven fabric.
Meanwhile, the invention provides a preparation method of the flexible heating fabric, which is characterized by comprising the following steps:
(1) Putting the cleaned polymer fiber fabric into a vacuum furnace, heating from room temperature to carbonization constant temperature under the atmosphere of protective gas, and performing carbonization treatment;
(2) And cooling from the constant temperature to room temperature to obtain the flexible heating fabric.
Further, a constant-speed heating mode is adopted when the temperature is raised to the carbonization constant temperature, or a gradient heating mode is adopted when the temperature is raised to a certain temperature and then is maintained for a period of time; the heating rate is any one rate of 1-200 ℃/min, wherein 5 ℃/min is preferred; the carbonization constant temperature is any one of 600-1600 ℃; the carbonization treatment time is 0.1-12 hours.
Further, the cooling mode is one of furnace cooling or protective gas cooling.
Further, the protective gas is one or more of inert gas and nitrogen, wherein argon is preferred.
Finally, the invention provides a method for controlling the conductivity of the flexible heating fabric, which is characterized in that the sheet resistance of the flexible heating fabric is in an exponential relation with the carbonization constant temperature and the constant temperature time in the carbonization treatment process. When the flexible heating fabric is polyimide-based, the correlation between the square resistance (y) and the constant temperature time (t) of the polyimide-based flexible heating fabric is as follows:y = c 1 t -0.784 （c 1 is constant); the correlation between the sheet resistance (y) and the constant temperature (T) of the polyimide-based flexible heating fabric is as follows: y = E + c 2 T -8.009 （E、c 2 Is a constant).
Compared with the prior art, the invention has the remarkable advantages that:
1. the invention mainly takes the polymer fiber material with the melting temperature higher than the thermal decomposition temperature as the raw material, and prepares the flexible heating fabric through a simple carbonization process without graphitization treatment.
2. The heating fabric has excellent flexibility, and the conductivity (sheet resistance) can be regulated and controlled by a preparation process.
3. The conductive heating fabric utilizes the planarity of the fabric, so that the two sides of the fabric are the heating surface and the radiating surface, no obvious gap exists in the fabric, the heating is uniform, the heat is easy to transfer and disperse, and the heat radiation performance is good.
4. The conductive heating fabric has high thermal efficiency, because visible light and ultraviolet wave band electromagnetic radiation do not exist in the heating process, the loss from electric energy to heat energy is reduced, and through theoretical calculation, the thermal efficiency can reach more than 99 percent, and can reach 97 percent in practical application, so that the conductive heating fabric is an efficient energy-saving material.
5. The conductive heating fabric has the advantage of wide adaptability, and because the conductive heating fabric has the characteristics of softness and light weight of common fabrics, the size and the carbonization process of the heating fabric can be controlled according to the requirements of heat productivity and specification to obtain different resistance values so as to meet different specific requirements.
Drawings
The following detailed description is to be read with reference to the drawings and the accompanying detailed description.
Fig. 1 shows a flexible heating fabric obtained by carbonizing a fabric made of polyimide fibers.
Fig. 2 is an infrared imaging diagram of the polyimide-based flexible heating fabric in a power-on heating state.
Fig. 3 is a trend graph of the square resistance of the polyimide-based flexible heating fabric along with the change of the carbonization constant temperature time when the carbonization constant temperature of the polyimide fiber fabric is 800 ℃.
FIG. 4 is a trend chart of the square resistance of the polyimide-based flexible heating fabric changing with the carbonization constant temperature when the carbonization constant temperature time of the polyimide fiber fabric is 30 min.
Detailed Description
The invention will be better understood by reference to the following specific examples.
Example 1
(1) Experimental procedure
Selecting a polyimide fiber fabric as a high-molecular fiber fabric;
putting the cleaned polyimide fiber fabric into a vacuum furnace, heating to 1000 ℃ at a heating rate of 5 ℃ per minute under the protection of argon atmosphere, and keeping for 30 minutes;
and (c) cooling to room temperature along with the furnace to obtain the polyimide-based flexible heating fabric (shown in figure 1).
(2) Verification of effects
The polyimide-based flexible heating fabric obtained by measuring the sheet resistance of the obtained polyimide-based flexible heating fabric by using an FT-330 series common four-probe sheet resistance electrical resistivity tester has the sheet resistance of 2.0 ohm/sq. The testing method is a universal testing method of the sheet resistance, in brief, the four-probe is pressed on a sample, and the universal meter reads data.
The polyimide-based flexible heating fabric is used for preparing a heating body (1 x 10 x 20 cm) 3 ) Under the condition of voltage 5V, the power of the heating element is 5.2W, the heating element is electrified and heated under the condition of room temperature of 18 ℃, the surface temperature of the heating element is averagely 2 ℃ above and below 56 ℃ (figure 2), and the heat conversion efficiency is 97%.
When the flexible heating fabric is polyimide-based, the correlation between the square resistance (y) and the constant temperature time (t) of the polyimide-based flexible heating fabric is as follows: y = c 1 t -0.784 （c 1 Is constant); the polyimide-based flexible heating fabric has the following correlation between the sheet resistance (y) and the constant temperature (T): y = E + c 2 T -8.009 （E、c 2 Is a constant）。
Example 2
(1) Experimental procedure
Selecting a cellulose fiber fabric as a high-molecular fiber fabric;
step (b), putting the cleaned cellulose fiber fabric into a vacuum furnace, heating to 600 ℃ at a constant speed at a heating rate of 2 ℃ per minute under the protection of argon atmosphere, and keeping for 12 hours;
and (c) cooling to room temperature along with the furnace to obtain the cellulose-based flexible heating fabric.
(2) Verification of effects
The sheet resistance of the obtained cellulose-based flexible heating fabric is 431.0 ohm/sq measured by using an FT-330 series common four-probe sheet resistance electrical resistivity tester. The test method was the same as in example 1.
The cellulose-based flexible heating fabric is used for preparing a heating body (2 x 10 x 20 cm) 3 ) Under the condition of 220V voltage, the power of the heating element is 100W, the heating element is electrified and heated at the room temperature of 18 ℃, the surface temperature of the heating element is up to 2 ℃ and down to 170 ℃, and the heat conversion efficiency is 97%.
Example 3
(1) Experimental procedure
Selecting phenolic resin fiber fabric as high molecular fiber fabric;
putting the cleaned phenolic resin fiber fabric into a vacuum furnace, heating to 800 ℃ at a heating rate of 10 ℃ per minute under the protection of nitrogen atmosphere, and keeping for 5 hours;
and (c) air-cooling to room temperature under the protection of nitrogen to obtain the phenolic resin-based flexible heating fabric.
(2) Verification of effects
The square resistance of the obtained phenolic resin-based flexible heating fabric is 57.8 ohm/sq as measured by an FT-330 series common four-probe square resistance electrical resistivity tester. The test method was the same as in example 1.
The phenolic resin-based flexible heating fabric is made into a heating element (1 x 10 x 20 cm) 3 ) The power of the heating element is 400W under the condition of 220V voltage, and the heating element is electrified and heated under the condition of 18 ℃ at room temperatureThe surface temperature of the heating element is 227 ℃ and the thermal conversion efficiency is 96 percent.
Example 4
(1) Experimental procedure
Selecting a melamine fiber fabric as a polymer fiber fabric;
step (b), putting the cleaned melamine fiber fabric into a vacuum furnace, heating from room temperature to 300 ℃ at a heating rate of 20 ℃ per minute for 30 minutes under the protection of nitrogen atmosphere, continuing heating to 900 ℃, and keeping for 3 hours;
and (c) cooling to room temperature along with the furnace to obtain the melamine-based flexible heating fabric.
(2) Verifying the effects
The square resistance of the obtained melamine-based flexible heating fabric is measured by using an FT-330 series common four-probe square resistance electrical resistivity tester and is 5.3 ohm/sq. The test method was the same as in example 1.
The melamine-based flexible heating fabric is made into a heating element (1 x 5 x 20 cm) 3 ) The power of the heating element is 42.0W under the condition of 30V of voltage, the heating element is electrified and heated under the condition of 18 ℃ at room temperature, the surface temperature of the heating element is up to 121 ℃ and down to 2 ℃, and the heat conversion efficiency is 96%.
Example 5
(1) Experimental procedure
Step (a), selecting aramid fiber fabric as polymer fiber fabric;
putting the cleaned aramid fiber fabric into a vacuum furnace, heating from room temperature to 400 ℃ at a heating rate of 50 ℃ per minute under the protection of helium atmosphere, keeping the temperature for 50 minutes, then continuing heating to 1200 ℃, and keeping the temperature for 1 hour;
and (c) cooling the aramid fiber-based flexible heating fabric to room temperature by using helium gas for protection, thus obtaining the aramid fiber-based flexible heating fabric.
(2) Verification of effects
The FT-330 series common four-probe sheet resistance electrical resistivity tester is used for measuring the obtained aramid fiber-based flexible heating fabric, and the sheet resistance of the aramid fiber-based flexible heating fabric is 1.5 ohm/sq. The test method was the same as in example 1.
The aramid fiber-based flexible heating fabric is made into a heating body (1 x 10 x 20 cm) 3 ) Under the condition of voltage of 5V, the power of the heating element is 6.3W, the heating element is electrified and heated under the condition of room temperature of 18 ℃, the surface temperature of the heating element is about 50 ℃ and about 1.5 ℃, and the heat conversion efficiency is 97%.
Example 6
On the basis of example 1, by changing the carbonization treatment process of polyimide, polyimide-based flexible heating fabrics with different conductivities are obtained as shown in table 1, and the results are shown in tables 1 and 2.
TABLE 1 polyimide-based Flexible heating Fabric at carbonization constant temperature of 800 ℃
Sheet resistance at different processing times
TABLE 2 polyimide-based Flexible heating Fabric with a carbonization duration of 30min
Sheet resistance at different constant temperature
Fig. 3 is a trend graph of the square resistance of the polyimide-based flexible heating fabric changing with the carbonization constant temperature time when the carbonization constant temperature of the polyimide fiber fabric is 800 ℃. Under the condition of the embodiment, the sheet resistance (y) of the flexible heating fabric and the constant temperature time (t) are in a relation of:
y = 217.59t -0.784
FIG. 4 is a graph showing the trend of the sheet resistance of the polyimide-based flexible heating fabric changing with the carbonization constant temperature when the carbonization constant temperature time of the polyimide fiber fabric is 30 min. Under the condition of the embodiment, the relationship between the sheet resistance (y) of the flexible heating fabric and the constant temperature (T) is as follows:
y = 2E+25T -8.009
the above embodiments are only for further illustration of the present invention, and should not be construed as limiting the scope of the present invention, and the non-essential changes and modifications made by those skilled in the art according to the above disclosure are all within the scope of the present invention.
The noun explains:
square resistance: refers to the resistance between the edges of a square area in conductive material.
A heating body: the electric heating device is provided with a component which generates heat when being electrified.
Melting temperature: refers to the temperature at which the polymer material changes from a solid to a liquid upon heating.
Thermal decomposition temperature: which means the temperature at which the high molecular material is rapidly decomposed into low molecular combustible materials by heating.
Carbonizing treatment: the thermal decomposition of organic compounds into carbon and other products in the absence of air.
Cooling along with the furnace: after the material or the workpiece is heated and insulated in the heat treatment furnace, the energy of the furnace is cut off, so that the material or the workpiece is naturally cooled along with the furnace body.
Cooling protective gas: after the material or the workpiece is heated and insulated in the heat treatment furnace, the energy of the furnace is cut off, and meanwhile, a mode of introducing protective gas flow into the furnace chamber to accelerate the cooling speed of the material or the workpiece is used.
Claims (10)
1. A flexible heating fabric is a carbon fiber fabric obtained by carbonizing a high polymer fiber fabric, and is characterized in that a high polymer fiber material in the high polymer fiber fabric contains a large number of annular structures, and the melting temperature of the high polymer fiber material is higher than the thermal decomposition temperature of the high polymer fiber material.
2. The flexible heat-generating fabric according to claim 1, wherein the carbon fibers in the carbon fiber fabric have a partially or fully flaky graphite crystallite structure in the fiber axial direction; the graphite microcrystal structure is a hexagonal sheet laminated structure which is formed by sp atoms of carbon atoms on the same layer 2 Hybridization forms covalent bond.
3. The flexible heating fabric according to claim 1, wherein the polymer fiber material is one or more of polyimide fiber, cellulose fiber, phenolic resin fiber, melamine fiber and aramid fiber.
4. The flexible heat-generating fabric as claimed in claim 1, wherein the flexible heat-generating fabric is one of a woven fabric, a knitted fabric, a three-dimensional fabric, or a non-woven fabric.
5. The method for preparing a flexible heating fabric according to claim 1, which comprises the following steps:
(1) Putting the cleaned polymer fiber fabric into a vacuum furnace, heating from room temperature to carbonization constant temperature under the atmosphere of protective gas, and performing carbonization treatment;
(2) And cooling from the constant temperature to room temperature to obtain the flexible heating fabric.
6. The preparation method of the flexible heating fabric according to claim 5, wherein the temperature is raised to the carbonization constant temperature by a constant-speed temperature raising mode or a gradient temperature raising mode of raising the temperature after raising the temperature to a certain temperature and maintaining the temperature for a period of time and then raising the temperature; the heating rate is any one of 1-200 ℃/min, wherein 5 ℃/min is preferred; the carbonization constant temperature is any one of 600-1600 ℃; the carbonization treatment time is 0.1-12 hours.
7. The method for preparing a flexible heating fabric according to claim 5, wherein the cooling manner is one of furnace cooling and protective gas cooling.
8. The preparation method of the flexible heating fabric according to claim 5, wherein the protective gas is one or more of inert gas and nitrogen, preferably argon.
9. A control method of the conductivity of the flexible heating fabric according to any one of claims 1 to 4, wherein the sheet resistance of the flexible heating fabric is in an exponential relationship with the carbonization constant temperature and constant temperature time in the carbonization treatment process.
10. A method for controlling the electrical conductivity of a flexible heating fabric according to claim 9, wherein when the flexible heating fabric is polyimide-based, the correlation between the sheet resistance (y) and the constant temperature time (t) of the polyimide-based flexible heating fabric is as follows: y = c 1 t -0.784 （c 1 Is a constant); the correlation between the sheet resistance (y) and the constant temperature (T) of the polyimide-based flexible heating fabric is as follows: y = E + c 2 T -8.009 （E、c 2 Is a constant).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110888829.XA CN115704125A (en) | 2021-08-06 | 2021-08-06 | Flexible heating fabric and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110888829.XA CN115704125A (en) | 2021-08-06 | 2021-08-06 | Flexible heating fabric and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115704125A true CN115704125A (en) | 2023-02-17 |
Family
ID=85178559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110888829.XA Pending CN115704125A (en) | 2021-08-06 | 2021-08-06 | Flexible heating fabric and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115704125A (en) |
-
2021
- 2021-08-06 CN CN202110888829.XA patent/CN115704125A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105088420B (en) | The preparation method of high heat conduction pitch graphite fibre | |
| CN105600782A (en) | Graphene film prepared from flexible polyimide and preparing method thereof | |
| CN107493612B (en) | Flexible nano carbon composite material high-temperature electric heating film and preparation method thereof | |
| CN106847767A (en) | A kind of graphite Copper Foil heat sink compound | |
| CN107592685B (en) | A method of preparing double heating layer graphene Electric radiant Heating Films | |
| JP2009280433A (en) | Graphite composite film | |
| CN111073059B (en) | Nano-cellulose electrothermal film and preparation method thereof | |
| KR100756053B1 (en) | Manufacturing method of carbon fiber for sheet heater | |
| WO2017148106A1 (en) | Thermoplastic polyimide thin-film carbonized composite membrane, and preparation method therefor | |
| CN110944416A (en) | Graphene composite slurry, heating coating and preparation method thereof | |
| WO2018219000A1 (en) | Polyimide-based composite carbon film with high thermal conductivity and preparation method therefor | |
| Xiao et al. | Polybenzimidazole/conductive carbon black composite driven at low voltage for high-temperature heaters | |
| CN105696116A (en) | Preparation method of novel high-heat conduction carbon fibers | |
| CN115704125A (en) | Flexible heating fabric and preparation method thereof | |
| CN110451964A (en) | A kind of preparation method of high orientation Graphite block material | |
| CN109574668A (en) | The manufacturing method of carbonized film | |
| CN105916222A (en) | Far infrared electric heating film preparation method | |
| CN107545958A (en) | A kind of method and its device for reducing carbon-based conductive membrane volume resistivity | |
| CN205051898U (en) | Novel 36V safe voltage graphite alkene electric heat membrane | |
| CN114014679A (en) | Reinforced graphite film and preparation method thereof | |
| CN111117305A (en) | Graphene composite slurry, heating coating and preparation method thereof | |
| CN111996666B (en) | Titanium nanosheet/graphene-based fiber membrane and preparation method thereof | |
| CN113105657A (en) | High-orientation and high-power graphene heating film and preparation method and application thereof | |
| CN112004274A (en) | Titanium nano sheet/graphene-based heating film | |
| CN112064205B (en) | Palladium nanosheet/graphene-based fiber membrane and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |